package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.atguigu.gulimall.product.vo.AttraGroupRelationVo;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.mysql.cj.util.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")

public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {
    @Autowired
    AttrAttrgroupRelationDao attrAttrgroupRelationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    @Transactional
    public void saveAttr(AttrVo attr) {
        //1.保存本身
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.save(attrEntity);

        //2、保存关联关系
        if(attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId()!=null){
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();

            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationDao.insert(attrAttrgroupRelationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String attrType) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().
                eq("attr_Type","base".equalsIgnoreCase(attrType)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        if(catelogId != 0){
            queryWrapper.eq("catelog_id",catelogId);
        }

        String key = (String) params.get("key");
        if(!StringUtils.isNullOrEmpty(key)){
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),queryWrapper

        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();

        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);


            //设置分类和分组的名字
            if("base".equalsIgnoreCase(attrType)){
                AttrAttrgroupRelationEntity attrId = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId() !=null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }



            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());


        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public AttrRespVo getAtrrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attr = this.getById(attrId);
        BeanUtils.copyProperties(attr,respVo);


        if (attr.getAttrType()== ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //查询分组id,设置分组信息
            AttrAttrgroupRelationEntity attrgroupRelation = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));

            if (attrgroupRelation!=null) {
                respVo.setAttrId(attrgroupRelation.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
                if (attrGroupEntity!=null) {
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }
        //设置分类信息
        Long catelogId = attr.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryService.getById(catelogId);
        if (categoryEntity !=null) {
            respVo.setCatelogName(categoryEntity.getName());
        }

        return respVo;
    }

    @Override
    @Transactional
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity=new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.updateById(attrEntity);

        //修改分组关联
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            Integer count = attrAttrgroupRelationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            AttrAttrgroupRelationEntity attrgroupRelation = new AttrAttrgroupRelationEntity();
            attrgroupRelation.setAttrGroupId(attr.getAttrGroupId());
            attrgroupRelation.setAttrId(attr.getAttrId());
            if (count > 0) {
                attrAttrgroupRelationDao.update(attrgroupRelation, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            }else{
                attrAttrgroupRelationDao.insert(attrgroupRelation);
            }
        }


    }

    /**
     * 根据分组Id查找关联的所有树形
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        if(attrIds ==null || attrIds.size() ==0){
            return null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);

        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelations(AttraGroupRelationVo[] vos) {
       // attrAttrgroupRelationDao.delete(new QueryWrapper<AttrAttrgroupRelationEntity>().
        //eq("attr_id",1l).eq("attr_group_id",1l));
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity attrgroupRelation = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, attrgroupRelation);
            return attrgroupRelation;
        }).collect(Collectors.toList());
        attrAttrgroupRelationDao.deleteBatchRelation(entities);

    }
    //获取当前分组没有关联的属性
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属分类里的属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1)当前分类下的其他分组
        List<AttrGroupEntity> groupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = groupEntities.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupIds = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupIds.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        //2.3)从当前分类的所有树形中移除这些属性
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds !=null &&  attrIds.size()>0){
            queryWrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isNullOrEmpty(key)) {
            queryWrapper.and(w->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> pageUtils = this.page(new Query<AttrEntity>().getPage(params), queryWrapper);

        return new PageUtils(pageUtils);
    }

    @Override
    public List<Long> selectAttrSearchIds(List<Long> attrIds) {
        return this.baseMapper.selectAttrSearchIds(attrIds);
    }

}